import Vue from 'vue'
import VueRouter from 'vue-router'
import Home from '../views/Home.vue'
import store from "../store"

// 把这段代码直接粘贴到router/index.js中的Vue.use(VueRouter)之前
const originalPush = VueRouter.prototype.push;
VueRouter.prototype.push = function(location) {
    return originalPush.call(this, location).catch(err => {})
};
// const originalReplace = VueRouter.prototype.replace;
// VueRouter.prototype.replace = function(location) {
//   return originalReplace.call(this, location).catch(err => {})
// };
Vue.use(VueRouter)

const routes = [{
        path: "/",
        redirect: "/home"
    },
    {
        path: '/home',
        name: 'Home',
        component: Home,
        children: [{
            path: '/home/searchpopup',
            component: () =>
                import ( /* webpackChunkName: "searchpopup" */ '../views/SearchPopup.vue')
        }],
        meta: {
            // 解决tabbar的小bug
            tabbarActiveNum: 0,
            // 是否展示tabbar
            isShowTabbar: true
        }
    },
    {
        path: '/topic',
        component: () =>
            import ( /* webpackChunkName: "topic" */ '../views/Topic.vue'),
        meta: {
            tabbarActiveNum: 1,
            isShowTabbar: true
        }
    },
    {
        path: '/category',
        component: () =>
            import ( /* webpackChunkName: "category" */ '../views/Category.vue'),
        meta: {
            tabbarActiveNum: 2,
            isShowTabbar: true
        }
    },
    {
        path: '/cart',
        component: () =>
            import ( /* webpackChunkName: "cart" */ '../views/Cart.vue'),
        meta: {
            tabbarActiveNum: 3,
            isShowTabbar: true
        }
    },
    {
        path: '/user',
        component: () =>
            import ( /* webpackChunkName: "user" */ '../views/User.vue'),
        meta: {
            tabbarActiveNum: 4,
            isShowTabbar: true
        }
    },
    {
        path: "/productdetail",
        component: () =>
            import ( /* webpackChunkName: "productdetail" */ '../views/ProductDetail.vue'),
        meta: {
            isShowTabbar: false
        }
    }
]

const router = new VueRouter({
    mode: 'history',
    base: process.env.BASE_URL,
    routes
})

// 全局路由守卫/ 路由拦截    能够在每一次跳转路由之前拦截下来，做一定的逻辑处理
router.beforeEach((to, from, next) => {
    // 什么时候跑这里的代码？？  路由发生变化变化之前执行

    // console.log("beforeEach执行了");
    // console.log("to是：", to);  // 要去往的路由对象
    // console.log("from是：", from); // 从哪里出发的这个路由对象
    // 判断是不是要进入购物车
    // if(to.path=="/cart"){
    //   // console.log("进入到购物车");
    //   // 判断有没有登录
    //   // 如果没有登录， 跳转到 /user 页面 
    //   let token = localStorage.getItem("token");
    //   if(token){
    //     next()
    //   }else{
    //     Vue.prototype.$toast("请先登录！") 
    //     // 拿不到不到token，说明没有登录，跳转到 “我的”  /user
    //     setTimeout(()=>{
    //       next("/user")
    //     },800)

    //   }
    //   return
    // }
    if (to.path === "/home") {
        // this.chanIsShowShadow(false)
        store["_mutations"]["showshadow/chanIsShowShadow"][0](false);

    }
    next(); // 必须调用next，才能跳转到想要去的页面。没有调用next，就无法跳转页面
})


export default router